Block plane



lBLOGK PLANE Filed Nov. 9, 1944 lll lll III lllll Patented July 8, 1947BLOCK PLANE Raymond?. Lavietes, Shelton, Conn., Vassigner yto AbrahamIH. Lavietes, Shelton, Conn.

Application November 9, 1944, serial No. l562,671

2 claims. (c1. 14s- 14) This invention relates to carpenters planes,particularly block planes,and has for an object to provide an improvedand simplified construction in which there is a solid support for theblade independent of the working parts or adjusting means.

It is also an object to produce a more solid construction which providesmore solid support for the blade and eliminates chattering, and in whichthe blade is much less rapt to shift or'work out of position in use.

-A further object is to provide a construction in which the weight orpressure of the blade is on a part -of the actual bod-yor base ratherthan on the working or adjusting mechanism for the blade, with theresult that wear on working or adjusting parts is greatly reduced.

A still further object is to combine with such a support a positivedrive from `the adjusting means to the blade in which there is nothingto wearout or slip, and it is so arranged that when the parts areassembled the adjusting mechanism is properly and positively connectedto the blade, `and which construction is also so arranged that theclamping cap cannot be placed in position unless the adjusting means isproperly connected to the blade, and, therefore, there is no danger ofthe Yblade being clamped if it is not properly connected to theadjusting means, which might otherwise allow the blade to slip out ofplace in use.

With the foregoing and other objects in view I have .devised theconstruction illustrated in the accompanying drawing forming a, part ofthis specication. It is, however, to be understood the .device is notlimited to the specific details of construction and arrangement shown,but may embody various changes and modifications Within the scope of theinvention.

In these drawings:

Fig. l is a top plan view of the plane;

Fig. 2 is a longitudinal section substantially on line 2-2 of Fig. 1;

Fig. 3 is a top plan view with the clamp or cap removed, and

Fig. 4 is a top plan view of the blade and the lateral adjusting means.

This improved plane comprises a metal body or base 5 having the usualbottom wall 6 and the upright side walls 1, the bottom wall beingprovided with the usual transverse slot 8 -through which .projects thecutting edge 9 of the blade IIJ. The rear edge Wall of Athis slot ispreferably beveled as shown Vat .8a to form a seat for the blade. As inthe usual arrangement, the blade must lbe supported in an inclinedposition atfthe proper ang-le with the cutting edge .properly located inthe-slot and the bevel I I at -the proper angle. In Athis constructionan improved supporting means is provided for the opposite lend portionof the blade which supports this blade directly on the lbody Yor baseand independently ofthe adjusting means for the blade. Thissupport,`indicated at I2, com-prises a metal strip, in this case a stripof substantially flat metal, offset upwardly to form a looped portionprovided -with a top Wall I3 upon Vwhich'the blade rests, this loopedportion being preferably of substantially inverted yU-shape, thusforming .upright supporting -Walls I4 Yand I5 for the substantially flattop wall I3. The lower end -of the wall I4 extends laterally to providea, supporting foot I6 resting on and secured to the bottom Wall `6 ofthe body or base by any suitable means, preferably Welding, land theextension of the forward wall I5 also extends over the wall 6 and issecured thereto by lsimilar' means, preferably .at the portion I1. Thislportion I2, however, is somewhat longer than the portion Ilrso as toprovide a support or mounting fora combined securing means forthe bladeclamp and a lateral adjustment for the blade, indicated at I8.

The blade is 'provided with an opening -I9 and the supporting top wa-llI3 is provided with a longitudinal slot 20 through which projects a lug2| from an adjusting block 22 threaded on an adjusting screw 23 mountedin the support below the top wall I3. This screw in the'present -case ismounted in the upright Walls I4 and I5 and may be held againstlongitudinal movement by any `suitable means, such for example asreduced end portion 24 and a securing washer or cotter 25. It has ak-.nurled knob 26 yfor easy manipulation, and it will be seen thatwhenlthe blade -is not clamped operation -of the screw will adjust the`blade longitudinally. It will be Yevident with this construction thereis a positive drive from the adjusting means to the blade in which thereis no Vdanger of relative slipping between the `two and there -isnothing to wear out, so that this -positive connection ywill bemaintained indefinitely.

`Mounted above the blade .is the cap Aor clamp 2-1 which is an elongated`member arranged with its forward .end portion 28 resting on the vtop.of the blade adjacent the cutting edge, and at its opposite end portion-is curved or ccnvexed to forma Vsort of semi dome-.shaped .grip `21.9which is so shaped as to comfortably t the palm vof the Aoperators handand form a good grip 'by which the proper pressure or force may beapplied in using the plane. Mounted in this cap or clamp is a clampingscrew 33 which includes a knurled operating knob 3l above the clamp, andwhich passes through the clamp so that its lowerl end presses againstthe top of the blade lil to firmly clamp this blade against the top wallI3 of the rigid support l2. There is preferably a clamping head 32 onthis end of the screw and loosely mounted thereon so that it may seatproperly on the blade and also will permit the screw to turn relativethereto, so that this clamping end is not apt to turn on the blade andwear depressions or recesses therein or mar the surface of the blade. Y

Forwardly of the screw the clamp is provided with a keyhole-shapedopening 33 through which the member I8 projects. This member is securedat 34 to the forward portion of the support memberk l2 for turningmovements thereon, and includes an eccentric 35 passing trough anelongated slot 36 in the blade and engaging the side walls of thisslot,vr Above this eccentric this member has a flange 3l forming ashoulder to rest on the top of the clamp 27 and prevent upward movementunder action of the clamp screw 33. The wider portion of the keyholeshaped'opening 33 is of a size .to permit this flange to pass through,but the narrower portion of the opening 33 is of less width than thediameter of this flange so that it cannot pass through it, and when theclamp is in the position shown in Figs. 1 and 2 with the reduced portion38 in the narrow portion of this opening 33 the clamp will be held inposition by the ange 3l. The upper end portion of the member I8 is bentlaterally to form a grip 39 for operating it.

An auxiliary hand grip El may be mounted on the forward end of the lowerwall 6, and the side walls 'I may be provided with an opening 4I toreceive the thumb and a finger to improve the grip.

It will be seen that with this construction tightening of the screw 30will clamp the blade firmly on the top Wall I3 VVof the support, whichsupport is a solid support firmly mounted directly on the body or base5. The blade is therefore directly and solidly supported on the base andentirely independently of the adjusting means for the blade. Therefore,there is no unusual wear on the adjusting means, and there is much moresolid and rigid support for the blade than where the blade is carried bythe adjusting means or other working parts. The eccentric 35 cooperatingwith the sides of the elongated slot 36 in the blade forms a convenientmeans for shifting the cutting edge of the blade laterally to adjust itin the slot 8 to insure its being located parallel to the bottom wall ofthe base to secure uniform cutting. It will also be seen that the collar3l forms a fulcrum for the clamp or cap 21, so that when the clampingscrewl) is tightened the forward end portion 28 of the clamp rmly clampsthe forward end portion of the blade against the bottom wall 6. Thesolid clamping of the blade against a solid immovable support eliminateschattering of the blade, and also so holds and supports it that there isvery little danger of its shifting or moving out of position in use. Itwill also .be seen that the positive connection from the adjusting meansto the blade comprising the lug 2| seating in the opening I9 in theblade insures that the blade must be properly located with thislug inthe opening, and therefore the adjusting mechanism properly andpositively connected to the blade, before the cap 21 can be placed inposition. There is, therefore, no danger of this cap being assembled andthe blade being clamped if it is not properly connected to the bladeadjusting means, which might otherwise permit the blade to slip out ofplace in use. It will-of course be understood that after loosening theclamp 3() the blade may be readily adjusted longitudinally to thedesired position by manipulating the screw 23, After the blade is thusproperly located the cutting edge 9 may be lined up with the slot 8 andthe surface of the lower wall of the base by turning the eccentric 35,which Vwill shift the forward end of the blade and the cutting edgelaterally by swinging the blade about the lug 2| as a pivot, after whichthe screw 30 may be tightened to securely clamp all the parts in theirproper positions. On the other hand, the clamp 2l and the blade may bereadily removed for sharpening or renewal of the blade by merelyloosening the screw 3D, which will permit the cap 2l to be shiftedbackwardly or to the right to bring the flange 3'! into alignment` withthe wider portion of the keyhole shaped opening 33, which will permitthe clamp 2l to be then lifted from the device, and then the blade lilmay also be merely lifted from the device.

Having thus set forth the nature of my invention, what I claim is:

1. A plane of the character described comprising a base having atransverse slot, a blade inclined to the base having a cutting edgeadapted to project through said slot, a support for the blade mounted onand secured to the base comprising a metal strip including an invertedupwardly extending looped portion providing a top Wall on which Athe-blade rests and which is provided with a, longitudinal slot, anadjusting means mounted in said looped portion below the top wallincluding means projecting through the slot in the top wall connectedwith said blade for adjusting it, a cap over the blade connected withthe base, and a Yclamping screw carried by the cap for clamping theblade to said top Wall.

2. A plane of the character described comprising a base having atransverse slot, a blade inclined to the base having a cutting edgeadapted to project through said slot, a support for 'the blade mountedon the base comprising a substantially iiat strap of metal extendinglongitudinally of the base including an inverted substantially U-shapedportion forming a top wall on which the blade rests, said strap alsoincluding supporting feet extending in opposite directions from thelower ends of the side walls of the U-shaped portion fastened to thebase, an adjusting means mounted in said support and including lmeansconnected with the blade to adjust the blade on the support, and a clampabove the blade including means for clamping the blade against said topwall.

RAYMONDYP. LAVIE-TES.

REFERENCES CITED The following references are of record in the file ofvthis patent:

UNITED STATES PATENTS

